function getQuery(variable) {
    var query = window.location.search.substring(1);
    var vars = query.split("&");
    for (var i = 0; i < vars.length; i++) {
        var pair = vars[i].split("=");
        if (pair[0] == variable) {
            return pair[1];
        }
    }
    return (false);
}

function $(id) {
    return document.getElementById(id);
}

function getFormData(param) {
    let formData = new FormData();

    for (var fieldName in param) {
        formData.append(fieldName, param[fieldName]);
    }
}

function getUploadConfig() {
    let config = {
        headers: {
            'Content-Type': 'multipart/form-data'
        }
    }
    return config;
}